package com.quicks.beauty.core.utils;

import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;
import java.time.Period;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.time.temporal.ChronoUnit;
import java.time.temporal.TemporalUnit;
import java.util.ArrayList;
import java.util.Date;


public class LocalDateTimeUtils {

    //获取当前时间的LocalDateTime对象
    //LocalDateTime.now();

    //根据年月日构建LocalDateTime
    //LocalDateTime.of();

    //比较日期先后
    //LocalDateTime.now().isBefore(),
    //LocalDateTime.now().isAfter(),

    //Date转换为LocalDateTime
    public static LocalDateTime convertDateToLDT(Date date) {
        return LocalDateTime.ofInstant(date.toInstant(), ZoneId.systemDefault());
    }

    //LocalDateTime转换为Date
    public static Date convertLDTToDate(LocalDateTime time) {
        return Date.from(time.atZone(ZoneId.systemDefault()).toInstant());
    }


    //获取指定日期的毫秒
    public static Long getMilliByTime(LocalDateTime time) {
        return time.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli();
    }

    //获取指定日期的秒
    public static Long getSecondsByTime(LocalDateTime time) {
        return time.atZone(ZoneId.systemDefault()).toInstant().getEpochSecond();
    }

    //获取指定时间的指定格式
    public static String formatTime(LocalDateTime time, String pattern) {
        return time.format(DateTimeFormatter.ofPattern(pattern));
    }

    //获取当前时间的指定格式
    public static String formatNow(String pattern) {
        return formatTime(LocalDateTime.now(), pattern);
    }

    //日期加上一个数,根据field不同加不同值,field为ChronoUnit.*
    public static LocalDateTime plus(LocalDateTime time, long number, TemporalUnit field) {
        return time.plus(number, field);
    }

    //日期减去一个数,根据field不同减不同值,field参数为ChronoUnit.*
    public static LocalDateTime minu(LocalDateTime time, long number, TemporalUnit field) {
        return time.minus(number, field);
    }

    /**
     * 获取两个日期的差  field参数为ChronoUnit.*
     *
     * @param startTime
     * @param endTime
     * @param field     单位(年月日时分秒)
     * @return
     */
    public static long betweenTwoTime(LocalDateTime startTime, LocalDateTime endTime, ChronoUnit field) {
        Period period = Period.between(LocalDate.from(startTime), LocalDate.from(endTime));
        if (field == ChronoUnit.YEARS) return period.getYears();
        if (field == ChronoUnit.MONTHS) return period.getYears() * 12 + period.getMonths();
        return field.between(startTime, endTime);
    }

    //获取一天的开始时间，2017,7,22 00:00
    public static LocalDateTime getDayStart(LocalDateTime time) {
        return time.withHour(0)
                .withMinute(0)
                .withSecond(0)
                .withNano(0);
    }

    //获取一天的结束时间，2017,7,22 23:59:59.999999999
    public static LocalDateTime getDayEnd(LocalDateTime time) {
        return time.withHour(23)
                .withMinute(59)
                .withSecond(59)
                .withNano(999999999);
    }

    public static Date getDayStartDate() {
        LocalDateTime today_start = LocalDateTime.of(LocalDate.now(), LocalTime.MIN);
        Date date = Date.from(today_start.atZone(ZoneId.systemDefault()).toInstant());
        return date;
    }

    public static Date getDayEndDate() {
        LocalDateTime today_start = LocalDateTime.of(LocalDate.now(), LocalTime.MAX);
        Date date = Date.from(today_start.atZone(ZoneId.systemDefault()).toInstant());
        return date;
    }

    public static ArrayList<Long> getAppointmentTime() {
        ArrayList<Long> list = new ArrayList<>();
        LocalDateTime now = LocalDateTime.now();
        LocalDateTime night = now.withHour(9).withMinute(0).withSecond(0).withNano(0);
        LocalDateTime twenty = now.withHour(20).withMinute(0).withSecond(0).withNano(0);
        Date nightDate = Date.from(night.atZone(ZoneId.systemDefault()).toInstant());
        Date twentyDate = Date.from(twenty.atZone(ZoneId.systemDefault()).toInstant());
        long start = nightDate.getTime();
        long end = twentyDate.getTime();
        list.add(start);
        list.add(end);
        for (int i = 1; i < 8; i++) {
            list.add(start + i * 86400000);
            list.add(end + i * 86400000);
        }
        return list;
    }

    public static boolean getEndpoint(long timestamp) {
        ArrayList<Long> list = getAppointmentTime();
        int num = -1;
        for (int i = 0; i < list.size(); i++) {
            if (list.get(i) > timestamp) {
                num = i;
                break;
            }
        }
        // 不符合
        if (num < 0) {
            return false;
        }
        // 不符合
        if (num > list.size() - 1) {
            return false;
        } else {
            // 不符合
            if (num % 2 == 0) {
                return false;
            } else {
                return true;
            }
        }
    }

}
